/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:42:05,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:42:05,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:42:05,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:42:05,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:42:05,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:42:05,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:42:05,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:42:05,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:42:05,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:42:05,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:42:05,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:42:05,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:42:05,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:42:05,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:42:05,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:42:05,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:42:05,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:42:05,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:42:05,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:42:05,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:42:05,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:42:05,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:42:05,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:42:05,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:42:05,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:42:05,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:42:05,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:42:05,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:42:05,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:42:05,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:42:05,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:42:05,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:42:05,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:42:05,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:42:05,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:42:05,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:42:05,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:42:05,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:42:05,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:42:05,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:42:05,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:42:05,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:42:05,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:42:05,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:42:05,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:42:05,740 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:42:05,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:42:05,740 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:42:05,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:42:05,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:42:05,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:42:05,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:42:05,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:42:05,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:42:05,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:42:05,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:42:05,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:42:05,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:42:05,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:42:05,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:42:05,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:42:05,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:42:05,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:42:05,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:42:05,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:42:05,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:42:05,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:42:05,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:42:05,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:42:05,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:42:05,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:42:06,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:42:06,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:42:06,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:42:06,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:42:06,261 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:42:06,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-10-29 09:42:06,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65189b552/553baf7ed7f94da682c2d09bcf0c4c45/FLAG546c04c32 [2020-10-29 09:42:06,974 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:42:06,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-10-29 09:42:06,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65189b552/553baf7ed7f94da682c2d09bcf0c4c45/FLAG546c04c32 [2020-10-29 09:42:07,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65189b552/553baf7ed7f94da682c2d09bcf0c4c45 [2020-10-29 09:42:07,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:42:07,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:42:07,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:42:07,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:42:07,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:42:07,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:42:07" (1/1) ... [2020-10-29 09:42:07,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfb61e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:07, skipping insertion in model container [2020-10-29 09:42:07,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:42:07" (1/1) ... [2020-10-29 09:42:07,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:42:07,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:42:07,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:42:07,562 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:42:07,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:42:07,602 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:42:07,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:07 WrapperNode [2020-10-29 09:42:07,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:42:07,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:42:07,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:42:07,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:42:07,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:07" (1/1) ... [2020-10-29 09:42:07,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:07" (1/1) ... [2020-10-29 09:42:07,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:07" (1/1) ... [2020-10-29 09:42:07,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:07" (1/1) ... [2020-10-29 09:42:07,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:07" (1/1) ... [2020-10-29 09:42:07,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:07" (1/1) ... [2020-10-29 09:42:07,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:07" (1/1) ... [2020-10-29 09:42:07,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:42:07,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:42:07,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:42:07,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:42:07,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:42:07,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:42:07,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:42:07,779 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:42:07,779 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:42:07,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:42:07,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:42:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:42:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:42:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:42:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:42:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:42:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:42:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:42:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:42:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:42:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:42:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:42:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:42:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:42:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:42:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:42:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:42:08,385 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:42:08,385 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 09:42:08,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:42:08 BoogieIcfgContainer [2020-10-29 09:42:08,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:42:08,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:42:08,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:42:08,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:42:08,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:42:07" (1/3) ... [2020-10-29 09:42:08,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f34c207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:42:08, skipping insertion in model container [2020-10-29 09:42:08,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:07" (2/3) ... [2020-10-29 09:42:08,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f34c207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:42:08, skipping insertion in model container [2020-10-29 09:42:08,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:42:08" (3/3) ... [2020-10-29 09:42:08,400 INFO L111 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-10-29 09:42:08,415 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:42:08,427 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:42:08,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:42:08,488 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:42:08,489 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:42:08,489 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:42:08,489 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:42:08,489 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:42:08,489 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:42:08,490 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:42:08,490 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:42:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-29 09:42:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:42:08,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:08,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:42:08,527 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:08,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:08,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1195393588, now seen corresponding path program 1 times [2020-10-29 09:42:08,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:08,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316325877] [2020-10-29 09:42:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:09,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:09,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:09,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:09,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:42:09,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:42:09,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-10-29 09:42:09,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:09,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:09,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:42:09,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:42:09,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:42:09,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:42:09,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:09,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:09,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:09,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:09,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:09,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:42:09,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:09,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:09,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:42:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:42:09,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316325877] [2020-10-29 09:42:09,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:42:09,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:42:09,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371210797] [2020-10-29 09:42:09,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:42:09,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:09,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:42:09,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:42:09,756 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 7 states. [2020-10-29 09:42:10,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:10,158 INFO L93 Difference]: Finished difference Result 64 states and 90 transitions. [2020-10-29 09:42:10,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:42:10,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-29 09:42:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:10,169 INFO L225 Difference]: With dead ends: 64 [2020-10-29 09:42:10,169 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 09:42:10,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:42:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 09:42:10,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-29 09:42:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 09:42:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-29 09:42:10,225 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 20 [2020-10-29 09:42:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:10,225 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-29 09:42:10,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:42:10,226 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-29 09:42:10,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:42:10,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:10,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:42:10,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:42:10,228 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:10,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:10,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1261555840, now seen corresponding path program 1 times [2020-10-29 09:42:10,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:10,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220410985] [2020-10-29 09:42:10,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:10,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:10,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:10,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:10,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:10,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:11,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:11,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:42:11,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:42:11,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-29 09:42:11,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:11,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:42:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:42:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:42:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:42:11,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:11,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:11,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:11,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:11,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:11,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:42:11,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:11,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:11,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:11,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:42:11,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:42:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:11,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:11,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:11,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:11,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:11,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:42:11,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:11,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:11,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:11,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:11,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:11,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:42:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:42:11,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220410985] [2020-10-29 09:42:11,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:42:11,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:42:11,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569546135] [2020-10-29 09:42:11,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:42:11,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:11,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:42:11,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:42:11,203 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2020-10-29 09:42:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:11,377 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2020-10-29 09:42:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:42:11,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-29 09:42:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:11,381 INFO L225 Difference]: With dead ends: 58 [2020-10-29 09:42:11,381 INFO L226 Difference]: Without dead ends: 37 [2020-10-29 09:42:11,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:42:11,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-29 09:42:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-29 09:42:11,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 09:42:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-29 09:42:11,393 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 27 [2020-10-29 09:42:11,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:11,393 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-29 09:42:11,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:42:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-29 09:42:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:42:11,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:11,395 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:42:11,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:42:11,395 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:11,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:11,396 INFO L82 PathProgramCache]: Analyzing trace with hash -984262871, now seen corresponding path program 1 times [2020-10-29 09:42:11,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:11,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678768235] [2020-10-29 09:42:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:11,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:11,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:11,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:11,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:11,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:11,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:12,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:12,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:12,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:13,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:13,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:42:13,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 09:42:13,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1911 [2020-10-29 09:42:13,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:13,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:13,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:42:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:42:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:42:13,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:42:13,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:13,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:13,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:13,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:42:13,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:13,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:13,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:42:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:13,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:13,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:13,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:42:13,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:13,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:13,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:13,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:42:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:42:13,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678768235] [2020-10-29 09:42:13,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:42:13,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:42:13,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151257602] [2020-10-29 09:42:13,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:42:13,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:13,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:42:13,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:42:13,441 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 7 states. [2020-10-29 09:42:13,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:13,896 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-10-29 09:42:13,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:42:13,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-29 09:42:13,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:13,898 INFO L225 Difference]: With dead ends: 74 [2020-10-29 09:42:13,898 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 09:42:13,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:42:13,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 09:42:13,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2020-10-29 09:42:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 09:42:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-29 09:42:13,925 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 30 [2020-10-29 09:42:13,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:13,925 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-29 09:42:13,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:42:13,926 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-29 09:42:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:42:13,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:13,929 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:42:13,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:42:13,930 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:13,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:13,930 INFO L82 PathProgramCache]: Analyzing trace with hash 628466400, now seen corresponding path program 2 times [2020-10-29 09:42:13,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:13,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722688190] [2020-10-29 09:42:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:13,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:13,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:14,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:14,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:14,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:14,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:15,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:15,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:15,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:17,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:17,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:42:17,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 09:42:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3643 [2020-10-29 09:42:17,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:17,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:42:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 09:42:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:42:17,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:42:17,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:17,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:17,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:17,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:17,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:17,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:17,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:17,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:17,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:17,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:17,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:17,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:42:17,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:42:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:17,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:17,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:17,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:17,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:42:17,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:17,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:42:17,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722688190] [2020-10-29 09:42:17,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:42:17,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:42:17,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282834240] [2020-10-29 09:42:17,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:42:17,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:17,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:42:17,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:42:17,758 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 8 states. [2020-10-29 09:42:18,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:18,037 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-29 09:42:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:42:18,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-29 09:42:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:18,038 INFO L225 Difference]: With dead ends: 44 [2020-10-29 09:42:18,038 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:42:18,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:42:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:42:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:42:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:42:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:42:18,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-10-29 09:42:18,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:18,040 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:42:18,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:42:18,041 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:42:18,041 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:42:18,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:42:18,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:42:18,280 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-29 09:42:18,281 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-29 09:42:18,281 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-29 09:42:18,281 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-29 09:42:18,281 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-29 09:42:18,281 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:42:18,282 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-29 09:42:18,282 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:42:18,282 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:42:18,282 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:42:18,282 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:42:18,282 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:42:18,283 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-29 09:42:18,283 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:42:18,283 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:42:18,283 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:42:18,283 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 37) no Hoare annotation was computed. [2020-10-29 09:42:18,283 INFO L270 CegarLoopResult]: At program point L35-3(lines 35 37) the Hoare annotation is: (and (<= (+ (* 3 main_~i~0) 1) (+ main_~j~0 main_~n~0)) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-29 09:42:18,283 INFO L274 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-10-29 09:42:18,284 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 25 40) no Hoare annotation was computed. [2020-10-29 09:42:18,284 INFO L270 CegarLoopResult]: At program point L36-2(lines 36 37) the Hoare annotation is: (and (<= (+ main_~i~0 1) main_~n~0) (<= (+ (* 3 main_~i~0) 1) (+ main_~j~0 main_~n~0)) (<= (+ main_~j~0 3) (+ main_~i~0 (* 2 main_~n~0)))) [2020-10-29 09:42:18,284 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-29 09:42:18,284 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 (* 2 main_~n~0)))) (and (<= (+ main_~i~0 1) main_~n~0) (<= (+ (* 3 main_~i~0) 1) (+ main_~j~0 main_~n~0)) (<= main_~k~0 .cse0) (<= (+ main_~j~0 3) .cse0))) [2020-10-29 09:42:18,284 INFO L274 CegarLoopResult]: For program point L37-1(lines 36 37) no Hoare annotation was computed. [2020-10-29 09:42:18,284 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-10-29 09:42:18,285 INFO L274 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-10-29 09:42:18,285 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 25 40) no Hoare annotation was computed. [2020-10-29 09:42:18,285 INFO L277 CegarLoopResult]: At program point L38(lines 25 40) the Hoare annotation is: true [2020-10-29 09:42:18,285 INFO L274 CegarLoopResult]: For program point L34-2(lines 34 37) no Hoare annotation was computed. [2020-10-29 09:42:18,285 INFO L277 CegarLoopResult]: At program point L34-3(lines 34 37) the Hoare annotation is: true [2020-10-29 09:42:18,285 INFO L274 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-10-29 09:42:18,285 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 25 40) the Hoare annotation is: true [2020-10-29 09:42:18,286 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-29 09:42:18,286 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-29 09:42:18,286 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-29 09:42:18,286 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-29 09:42:18,286 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-29 09:42:18,286 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-29 09:42:18,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:42:18 BoogieIcfgContainer [2020-10-29 09:42:18,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:42:18,310 INFO L168 Benchmark]: Toolchain (without parser) took 11007.86 ms. Allocated memory was 162.5 MB in the beginning and 282.1 MB in the end (delta: 119.5 MB). Free memory was 117.1 MB in the beginning and 178.5 MB in the end (delta: -61.4 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:42:18,311 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 162.5 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:42:18,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.74 ms. Allocated memory is still 162.5 MB. Free memory was 116.6 MB in the beginning and 106.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:42:18,314 INFO L168 Benchmark]: Boogie Preprocessor took 90.82 ms. Allocated memory is still 162.5 MB. Free memory was 106.8 MB in the beginning and 145.1 MB in the end (delta: -38.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:42:18,315 INFO L168 Benchmark]: RCFGBuilder took 684.29 ms. Allocated memory is still 162.5 MB. Free memory was 145.1 MB in the beginning and 128.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:42:18,322 INFO L168 Benchmark]: TraceAbstraction took 9914.86 ms. Allocated memory was 162.5 MB in the beginning and 282.1 MB in the end (delta: 119.5 MB). Free memory was 128.6 MB in the beginning and 178.5 MB in the end (delta: -49.9 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:42:18,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 162.5 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.74 ms. Allocated memory is still 162.5 MB. Free memory was 116.6 MB in the beginning and 106.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.82 ms. Allocated memory is still 162.5 MB. Free memory was 106.8 MB in the beginning and 145.1 MB in the end (delta: -38.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 684.29 ms. Allocated memory is still 162.5 MB. Free memory was 145.1 MB in the beginning and 128.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9914.86 ms. Allocated memory was 162.5 MB in the beginning and 282.1 MB in the end (delta: 119.5 MB). Free memory was 128.6 MB in the beginning and 178.5 MB in the end (delta: -49.9 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (i + 1 <= n && 3 * i + 1 <= j + n) && j + 3 <= i + 2 * n - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 3 * i + 1 <= j + n && i + 1 <= n - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.5s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 136 SDslu, 100 SDs, 0 SdLazy, 391 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 29 PreInvPairs, 44 NumberOfFragments, 108 HoareAnnotationTreeSize, 29 FomulaSimplifications, 1317 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 250 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 8972 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 18/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...